Chemical Composition of Ammonium Dichromate

The video tutorial explains how to calculate the number of atoms in ammonium dichromate (NH4)2Cr2O7. It begins by introducing the compound and explaining the significance of parentheses in chemical formulas. The tutorial then details the calculation of nitrogen and hydrogen atoms in the ammonium ion, followed by the calculation of chromium and oxygen atoms in the dichromate ion. Finally, it sums up the total number of atoms in the compound, concluding with a brief thank you.

What is the chemical formula for ammonium dichromate?

• NH42Cr2O7

• NH42CrO7

• NH4Cr2O7

• NH4CrO4

How many nitrogen atoms are present in ammonium dichromate?

• 1

• 2

• 4

• 8

What is the total number of hydrogen atoms in ammonium dichromate?

• 8

• 2

• 6

• 4

How many chromium atoms are found in ammonium dichromate?

• 3

• 2

• 1

• 4

What is the total number of oxygen atoms in ammonium dichromate?

• 8

• 7

• 6

• 5

What is the total number of atoms in ammonium dichromate?

• 17

• 18

• 19

• 20